Finding the Fourth Proportional to 3,476,806.20, 5,215,209.30 and 3,178,207.80
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Solution
The fourth proportional to 3,476,806.20, 5,215,209.30 and 3,178,207.80 is: 4,767,311.70
Step by Step Solution
- Step 1: Write the proportion equation
3,476,806.20 : 5,215,209.30 = 3,178,207.80 : x - Step 2: Convert to fraction form
3,476,806.20/5,215,209.30 = 3,178,207.80/x - Step 3: Cross multiply
3,476,806.20x = 5,215,209.30 × 3,178,207.80 - Step 4: Simplify right side
3,476,806.20x = 16,575,018,875,892.54 - Step 5: Solve for x
x = 16,575,018,875,892.54/3,476,806.20 - Step 6: Final answer
x = 4,767,311.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.